CityEngine 2009 is powered by FLEXnet licensing system and supports node-locked and floating licenses.
The CityEngine PRO is available with node-locked or floating licensing, whereas the CityEngine SE supports node-locked licenses only (see Feature Comparison Chart).
Node-Locked License
A node-locked license is bound to the MAC address and valid for a single computer. No network connection is required at any time, setup is easy and quick.
Floating License
Floating licenses are well suited for multi-user environments. Licenses are not bound to specific computers, and can be obtained on demand. A license server is required to use floating licenses.
For normal CityEngine usage, a network connection to the license server is required. To be able to run the CityEngine in offline environments as well, floating licenses can be conveniently "borrowed" (i.e. checking out a license) for a specified period from within the CityEngine.
